IEC Year 1 Final Exam Tested Questions & Revised Correct Answers
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Course
Iec
Institution
Iec
IEC Year 1 Final Exam Tested
Questions & Revised Correct
Answers
1) To minimize conductor insulation damage and arcing
damage to electrical equipment during a ground fault or a
short circuit, ___ should be minimized.
Select one:
a. time duration of the fault
b. ampere level of the ...
IEC Year 1 Final Exam Tested
Questions & Revised Correct
Answers
1) To minimize conductor insulation damage and arcing
damage to electrical equipment during a ground fault or a
short circuit, ___ should be minimized.
Select one:
a. time duration of the fault
b. ampere level of the fault current
c. both a and b
d. neither a nor b - ANSWER time duration of the fault
2) Article ___ in the NEC® covers grounding and bonding of
electrical systems.
Select one:
a.422
b.424
,c.250
d.240
e.280 - ANSWER 250
3) Self-tapping sheet metal screws (TEK screws) ___
permitted to be used to connect the equipment grounding
conductor to a metal box.
Select one:
a.are
b.are not - ANSWER Are not
4) According to Article 250, a metal underground water pipe
that is in direct contact with the earth for 10 ft. or more
(including any metal well casing effectively bonded to the
pipe) and electrically continuous (or made electrically
continuous by bonding around insulating joints or
insulating pipe) to the points of connection of the
grounding electrode conductor and the bonding
conductors would be a good ___.
Select one:
, a. insulator
b. service conductor
c. grounding electrode
d. neutral - ANSWER grounding electrode
5) If connected to a metal water piping system, the grounding
electrode conductor shall be connected at some point within
the first ___ of where it enters the building.
Select one:
a. 25 ft (7.5 m)
b. 10 ft (3.0 m)
c. 5 ft (1.52 m) - ANSWER 5 ft (1.52 m)
6) When determining the minimum size of a grounding
electrode conductor, Table ___ is used.
Select one:
a. 250.122
b. 310.15(B)(16)
c. 250.66
, d. 314.16(A)
e. none of these - ANSWER 250.66
7) The grounding blade on an attachment plug is ___ than the
current-carrying conductor blades. This is to ensure that the
grounding connection is made before the current-carrying
conductor connections and breaks its connection after the
current-carrying conductor connections (first make-last break).
Select one:
a.more durable
b.longer
c.larger
d.tarnish-resistant - ANSWER Longer
8) An equipment grounding conductor (EGC) is the conductor
that is ___.
Select one:
a. installed with the branch-circuit conductors in a conduit or
cable run
b.
installed between the neutral bar and the ground bar in the
service panel
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